Integrating means



June 16, 1942. H. 1.. MERRICK INTEGRATING MEANS Filed NOV. 22, 1938 3 Sheets-Sheet 2 G. Wm .Mx m L P...

3nventor Hqrwfl. Me [fad/7677M .SMer/v' (Ittomeg June 16, 1942.

H. L. MERRICK INTEGRATING MEANS Filed NOV. 22, 1938 3 Sheets-Sheet 3 m o ,4 w \w Maw m M w M 3 Z WM 0 z my MW 3 MW 5 Qwx v Q R 9 Patented June 16, 1942 UNITED STATES PATENT OFFICE INTEGRATING llIEAN S Application November 22, 1938, Serial No. 241,734

2 Claims. (CL 235-61) This invention relates to integrating means particularly adapted for use in connection with weighing mechanism including a scale beam arranged with means to support a traveling conveyer and means to balance the load transported by the conveyer operative to normally maintain the scale beam in a position of equilibrium and to counterbalance an applied load, and a register to totalize and indicate the weight of material transported by the conveyor, and it is the object of the invention to provide improved means to control the actuation of the register by the speed of travel of the conveyer and the weight of the load transported by the conveyer.

The embodiment of the integrating means comprises a rotatable disk driven by the travel of a conveyor and adapted to rotate a wheel rotatably, pivotally and slidably mounted in frictional contact with the disk, and said wheel being adapted to be actuated about its pivot support to different angular positions relative to the direction of rotation of the disk by fluctuations of the scale beam from its position of equilibrium. The angular positions of the Wheel will cause the wheel to travel radially of the disk under the influence of the rotation of the disk until the wheel assumes its normal position in alinement with the direction of the travel of the disk, whereby the speed of rotation of the wheel will increase or decrease depending upon the position of the wheel relative to the center of the disk. The speed of rotation of the wheel will increase proportionally to the increase in the distance between the wheel and center of the disk.

The rotations of the disk and wheel are transmitted to means to combine said rotations and give the integrated value or load transported by the portion of the conveyer supported by the scale beam.

It is another object of the invention to reduce to a minimum the friction that tends to retard the pivotal actuation of the wheel.

It is a further object of the invention to permit movement of the wheel radially of the disk without interfering with the performance of the wheel.

It is a still further object of the invention to provide walking beam mechanism in means for transmitting the rotation of the wheel to the means for combining the rotations of the Wheel and disk, which mechanism will prevent said transmitting means stopping on dead center.

Further objects and advantages of the invention will be disclosed in the following detailed description of the invention.

In the drawings accompanying and forming a part of this application,

Figure 1 is an elevational end View of weighing mechanism showing the integrating means forming the embodiment of this invention operatively mounted relative to said Weighing mechanism.

Figure 2 is a plan view, on an enlarged scale, of the integrating means shown in Figure 1.

Figure 3 is a sectional view, on an enlarged scale, of means for combining the rotations of the disk and wheel, taken on the line 33 of Figure 2 looking in the direction of the arrows.

Figure 4 is a view looking at the left of Figure 5, partly broken away and partly in section to show the mounting of the friction wheel, the section being taken on th line 4-4 of Figure 5.

Figure 5 is an elevational view, on a reduced scale, of the wheel and walking beam means, taken on the line 55 of Figure 2 looking in the direction of the arrows.

Figure 6 is an elevational View, on a reduced scale, of means for transmitting rotation to the disk and means for transmitting the rotation of the Wheel and disk to the means for combining the rotations of the disk and wheel, taken on the line 66 of Figure 2 looking in the direction of the arrows.

Figure 7 is a sectional view, on a reduced scale, of the mounting of the disk, taken substantially on the line 1-1 of Figure 2 looking in the direction of the arrows.

In the embodiment of the invention illustrated in the accompanying drawings, the weighing mechanism is mounted upon a support or table 8 supported by standards 9 forming a part of the supporting structure of an endless conveyer belt I0 passing around a pair of drums, one of said drums, not shown, being driven and the other drum, shown at H, being rotatably supported in bearings l2 on supporting structure for the conveyer spaced from the standards 9. The upper and lower stretches of the conveyer belt between the drums are supported by a plurality of idler rollers l3, M, respectively, rotatably supported by bearings l5 in the standards 9 with one of the rollers I3 mounted on a platform l6 by standard bearings l'l fixed to the platform.

The platform I6 is suspended from the weighing mechanism by rods l8 fixed at one end to the platform, as at l9, and the opposite ends being bifurcated and arranged to loosely engage knife edges of pins fixed in and extending laterally from the opposite sides of a cross bar 20, as at 2| in Figure 1. The platform l6 and the portion of the conveyer belt passing thereover constitute a scale-platform. The bar 25 is swingingly suspended from the weighing mechanism by bifurcated members 22 having alined openings in the bifurcations for the loose engagement of knife edges of pins fixed in and extending from the opposite sides of the bar adjacent the pins 2|, as at 23 in Figure 1, and the closed ends of said members being arranged with rods 24, 25 adapted to extend through openings 26 in the table 8. The rod 24 is shorter than the rod 25 and is adapted to be pivotally connected to a scale lever 27 by a stirrup member 23 having alined openings in the leg portions to loosely engage knife edges of pins fixed in and extending from opposite sides of said lever 21, as at 25, and the U portion of saidmember being loosely engaged by a hook portion at the free end of the rod 24, as shown at 35. scale lever 2.7 is pivotally supported at one end adjacent the pins 29 by a bracket 3| fixed to the upper face of the table 8, and the opposite end of the lever is pivotally connected to an intermediate portion of another scale lever 32 by a pair of links 33 having openings at the opposite ends to loosely engage knife edges of pins fixed in and extending laterally from the opposite sides of the levers 21 and 32, as shown at 3 3. The

lever 32 is pivotally mounted to extend above and in alinement with the lever 21 at an end remote from the lever 27 by a bracket 35 fixed to the upper surface of the table 8, and said lever 32 is pivotally connected to the rod 25 adjacent the bracket 35 by a stirrup member 33 having alined openings in the leg portions to loosely engage knife edges of pins fixed in and extending from the opposite sides of the lever 32, as at 31, and the U shaped portion loosely engaging a hook portion at the free end of the rod 25, as shown at 33.

By this arrangement, the weight on the platform is evenly supported by the scale levers 21 The and 32, and is transmitted by said levers to a scale or weighing beam 59 pivotally mounted intermediate its ends by knife edge pivots extending laterally from the opposite sides of the lever to loosely engage arcuate shaped recesses in hanger brackets w, as shown at 4 i The brackets are fixed to the inner surface of the top of a housing 52 mounted on the table 8 to enclose the entire weighing mechanism. The scale beam 32} is of T shape with the vertical leg portion adjacent one end and in line with pivots 4|, as shown at 43 in Figure 1, and the end of the beam adjacent the leg portion 43 is connected to the free end of the lever 32 by a rod 44 having one end loosely engaging a stirrup member 45 similar to the stirrup members 28, 36 and pivotally connected to the free end of the lever 32 in the same manner as said stirrup members are connected to their respective levers, and the opposite end of the rod 44 is connected to the short end of the beam 39 by a flexible band 45 extended over and connected to an arcuate face arranged on the short end of the scale beam, as at 41. The opposite or long end of the scale beam is arranged with a compensating or counter-weight 48 connected to the beam 39 by a flexible band 49 extended over and fixed to an arcuate face of the long end of the scale beam, as at 50 in Figure 1.

The speed of the travel of the conveyer l0 and the fluctuations of the scale beam are combined and integrated to give the weight of material carried by a predetermined length of travel of the conveyer belt. The means to combine and integrate these values, comprises a disk 5| having a conical face declining inwardly from the periphery of the disk to a hub 52 rotatably and anti-frictionally supported by annular sets of ball bearings arranged in enlarged annular pockets in the hub, as at 53, and mounted on a stud shaft 54 fixed at one end in a base plate of an open top casing 55 fixedly supported on a raised platform 55 mounted on the table 8 within the housing '32. The stud shaft 54 is fixed in the casing 55 to extend obliquely to the base plate of the casing to position a portion of the conical face of the disk in a horizontal plane during the travel of the disk, as shown in Figure '7. The disk is rotated in synchronism with the travel of the conveyer belt 16 by means for transmitting the movement of the conveyer belt to the disk, comprising a shaft 51 rotatably mounted at the opposite ends in bearing bosses 5 8 arranged in opposite side walls of the casing 55, as shown in Figures 2 and '7, with one end of the shaft extending from the side wall of the casing 55 and adjacent side wall of the housing 42 and having a sprocket wheel 59 fixed thereto for the engagement of an endless sprocket chain 56 engaging around a sprocket wheel ti fixed on an end of a shaft 52 of one of the idler rollers I l extending from the outer side of the standard 9 in alinernent with the sprocket wheel 59, as shown in Figure l. The opposite end of the shaft 5'! extends from the opposite side wall of the casing 55 and is arranged with a pair of op posed beveled pinions 53, 64, the pinion 63 being fixed, in the present instance, on the end of the shaft in spaced relation to the pinion 64 loosely mounted on the shaft in abutting relation with the bearing boss 58 to permit the meshing engagement of said pinions with a beveled pinion 55 fixed on one end of a shaft 55 rotatably mounted in a boss 51 arranged on a lateral arm of a bracket 58 mounted on the exterior of the side Wall of the casing 55, as shown in Figures 6 and 7. The opposite end of the shaft 66 extends from the boss 51 and has a beveled pinion 59 fixed thereon in meshing engagement with a beveled pinion it! fixed on an end of a shaft H rotatably mounted in bearing bosses 72 in the opposite walls of a rectangular casing 73 integral with adjacent side walls of the casing 55 at the open top thereof. The Width of the casing 13 is less than half the diameter of the disk 5|, so that to provide a bearing at the end of the shaft ll positioned at the center of the disk, the inner boss 12 is extended from the frame, as shown in Figures 2 and 7. A beveled pinion M is fixed to the end of the shaft ll projecting from the elongated boss 72 to mesh with a beveled pinion l5 fixed to the hub 52 of disk 5!, as shown in Figure 7. The rotation of disk 55 representing the travel of the conveyer belt is one of the values to be integrated.

The other value to be integrated, which is the fluctuations of the scale beam 38 effected by variations in the load on the conveyor belt, is transmitted to a wheel 55 rotatably, pivotally and slidably mounted to extend at right angles to the horizontally extending portion of the disk 5!, so that rotation of the disk is irictionally imparted to the wheel. To ,assure the positive transmission of said rotation of the disk to the wheel, the periphery of the wheel is arranged with a center bead and .the opposite sides of the periphery tapering toward said bead, as. at H in Figures 4 and 7, and the disk is arranged with a friction surface, as shown at I8. The wheel I6 is rotatably supported in frictional contact with the disk surface I8 in a bifurcated portion of a carrier I9 for the friction wheel having two pivot bearings 80 in vertical alinement with each other and the axis of rotation of the wheel. The wheel I6 is arranged with axial pintles 8| extending axially from opposite sides of the wheel and rotatably supported in ball bearings mounted in annular recesses formed in the ends of the bifurcation legs of the carrier I9, as shown at 82 in Figure 4. The carrier pivots 80 are rotatably mounted in legs of a bifurcation 83 at one end of a carriage 84 having at the opposite end a depending portion 85 extending laterally of the carriage in horizontal plane transversely of the pivot bearings 80 of the friction wheel carrier and arranged with bearing bosses 86 at the opposite ends thereof for the rotatable mounting of grooved rollers 87 in a horizontal plane intermediate the horizontal portion of the disk 5! and axis of the wheel I6. The carriage 84 i mounted to have movement with the friction wheel carrier I9 radially of the horizontal portion of the disk 5! by the rollers 81 engaging a straight rail 88 of circular shape in cross section supported at the opposite ends in opposite walls of the casing 55 to extend parallelly of the horizontal portion of the disk 5|. By this arrangement of parts, the carriage 84 is supported at the opposite ends thereof by the wheel I6 and rollers 8?, and the weight thereof on the wheel I6 will maintain said wheel in frictional contact with the surface I8 of the disk BIv The wheel I6 is moved with its carrier I9 on the pivots 89 to different angular positions relative to the disk 55 in accordance With fluctuations in the scale beam 39 by a rod composed of two sections 89. Q adjustably connected to each other by a turnbuckle 9i. The rod section 89 is pivotally connected to a reduced extension 92 of the leg per- 7 tion .3 of the scale beam 39 by flattening diametrically opposite portions of the free end of the extension 92 and engaging said flattened end in a slot in an enlarged end of the rod section 89 with a pin pivotally retaining the flattened end in said slot, as shown at 93 in Figures 1 and 2. The rod section 99 is pivotally connected to the wheel carrier I9 by arranging the free end of said rod section with a bifurcated enlargement 94 and pivotally connecting it to a block 95 rotatably mounted in the free end of a rod 96 fixed in a socket in the wheel carrier I9 in line with and extending at a right. angle to the axis of the wheel 16, as shown at 91 in Figure 5. The connection between the scale beam 39 and wheel I6 may be varied by adjusting the length of the rod 89, 90. A pendulum weight 98 is adjustably mounted on the leg portion 43 of the scale beam 39 for accuracy in weighing. The bead II of wheel I6 will facilitate the pivoting of the wheel without interfering with the rotation thereof.

The resultant of the rotations of the disk and wheel 16 is recorded and indicated by a register of usual construction and shown in a general way at 09 mounted in the wall of the housing 42, and said resultant is obtained by differential means shown in Figures 2 and 3 as comprising a cage or frame member I00 having hollow trunnions IIEI projecting from the exterior of opposite sides thereof and rotatably mounted in bearings I02 arranged in the longitudinal walls of the casing I3, and the trunnions retained therein by removable caps to permit replacement of the cage I50. A pair of opposed beveled pinions I03 is rotatably mounted on a shaft I04 having the opposite ends mounted in the opposite walls intermediate the walls of the cage I00 arranged with the trunnions IOI with the pinions adjacent said opposite walls and spaced from each other. The pinions I03 mesh with a beveled pinion I fixed on an end of a shaft I06 rotatably mounted in a trunnion IN and the opposite end projecting from frame I3. The pinion I05 is rotated in synchronism with the rotation of the disk 5! through a gear [01 fixed on the shaft II meshing with a gear I08 fixed on the projecting end of shaft I06. The cage I00 with the pinions I03 is rotated in the same direction of rotation as the pinion I05 and in synchronism with the rotation of the friction wheel I6. This is accomplished by transmitting the rotation of the friction wheel to the cage I00 through walking beam means comprising a pair of hell crank levers pivotally supported by a bracket I09 fixed to an intermediate portion of the carriage 84 and having a pair of bifurcated arms H0, III, the arm H0 extending in a horizontal plane above the block and the other arm II I depending from the block in a vertical plane. Both arms are arranged with alined perforations in the bifurcations thereof and the perforations in one arm bifurcation being in vertical alinement with the perforations in the other arm, as shown at H2 in Figure 5. One of the bell crank levers comprises an arm I I3 integral with a sleeve H4 rotatably mounted on a pin H5 fixed in the perforations II2 of the bracket arm H9, and an arm H6 integral with the sleeve H4 extending at an obtuse angle to the lever arm I I3 and centrally of the bifurcations 83, as shown in Figures 2 and 5. lhe other bell crank lever comprises an arm HI having a boss fixed to a shaft H8 rotatably mounted in the perforations II2 of the bracket arm II I and an arm H9 having a sleeve fixed to the shaft H8 with the arm H9 extending at an obtuse angle to the lever arm II! of a greater degree than the angle between the lever arms H3, H6 and in vertical alinement with the lever arm I it, as shown in Figures 2 and 5. The free ends of the lever arms II 6, H9 are bifurcated for the pivotal mounting of blocks I20, I2I, respectively, having the upper and lower faces rounded for the pivotal mounting of yoke members I22, I23, respectively. The yoke members I22, I23 are arranged at the center of the connecting portions of fork members I24, I25, respectively. The free ends of the fork member I24 are arranged to encircle and be retained to pins I25 fixed in and projecting laterally from the outer faces and adjacent the peripheries of disks I26 fixed to the outer ends of the pintles 8i eccentrically of said disks, whereby rotation of the friction wheel I6 will impart reciprocatory movement to the crank lever H3, H6. The free ends of the fork member I25 are arranged to encircle and be retained to the peripheries of the disks I25, as shown at I2I in Figure 5. The pivotal connection between the blocks I20, I2I and the yoke members I22, I23 will permit the actuation by the scale beam 39 of the wheel I6 on its pivots 89 without interfering with the rotation of the wheel and reciprocation of thebell crank levers H3, Iifi and III, H9 by the rotation of the wheel I6.

The reciprocations of the bell crank levers H3, H6 and III, H9 are combined and converted into rotary movement which is transmitted to the cage I00. This is accomplished by an elongated pinion I23 having at one end an arbor I29 rotatably mounted in a bearing arranged in an upwardly extending arm of a bracket I3!) fixed to a side wall of the casing 55, as shown in Figure 2. The opposite end of the pinion I23 is rotatably supported in a bearing of a bracket I3I, similar to the bracket I30, as by a shaft I32 rotatably mounted in the bearing of bracket HM and having an end secured in a recess in said end of the pinion, as shown in dotted lines at 533 in Figure 2. The bearings of the brackets I36, I3I are in vertical aline- Inent wtih the rail 88. The opposite end of the shaft I32 is rotatably mounted in a boss I33 of the inner wall of the casing I3 with a portion extending into said casing and having a sprocket wheel I36 fixed thereon and adapted to be engaged by an endless sprocket chain I35 engaging around a sprocket wheel I35 fixed on the inner trunnion [ill of the cage I between the cage and-the inner wall of the casing I3, as shown in Figure 3. The reciprocations of the bell crank levers H3, H and Ill, H9 are transmitted into rotary motion of the elongated pinion I28 by a gear I51 rotatably mounted in a bifurcated portion I38 extending from the end of the carriage 84 above the rail 88 and pinion 28, and the gear I3? being fixed to a shaft I39 rotatable in the bifurcations of the portion I38 and having crank arms I40, I II fixed on the opposite end portions extending exteriorly of the bifurcations, as shown in Figure 2. The bell crank lever H3 is connected to the crank arm Iii by a link M2 pivotally connected at one end to a bifurcated end of arm H3, as indicated at M3, and the opposite end of the link being arranged as a strap to encircle and be secured to the crank of the arm MI, as shown at I44. The bell crank lever arm II? is connected to the crank arm iii? by a link I 55 pivotally connected at one end to a bifurcated end of the arm III, as at I45, and the opposite end of the link being arranged as a strap encircling and secured to the crank of arm Mil, as shown at It]. The shaft Its is mounted in the bifurcations of portion I38 to extend parallelly of and in the same vertical plane as the axis of the pinion I28 and rail 88, so that the gear I3? will mesh and have sliding engagement with the teeth of the pinion, whereby rotation of the gear will be imparted to the pinion and the gear will participate in the movement of the carriage 84 and thereby move lon itudinally of the pinion I28.

The pair of pinions m3 of the cage I00 are rotated at a speed proportional to the difference in the speed of rotation of the pinion Hi5 representing the speed of the rotation of the disk 5I' and the rotation of the cage I25 representing the speed of rotation of the wheel I6. This diffei 'e in speed represents the weight of the material transported by a predetermined length of conveyor travel and is transmitted to the register 99 by a beveled pinion I 38 fixed on a shaft It's in meshing engagement with the pinions sec. The shaft I69 is rotatably mounted in the trunnion Ifil of the cage in which the sprocket Wheel I36 is fixed, with the end of the shaft extending from the trunnion and inner wall of casing I3 and having a gear I56 fixed thereon meshing with a gear IEiI fixed on a shaft I52 rotatably mounted at one end in a bearing boss I53 arranged in the inner wall of the casing I3 and extending transversely above the disk 51 and connected at the opposite end to the register, as shown in Figure 2. I

In the operation of the device, the position of the friction wheel outwardly from or toward the axis of the disk will depend on the travel of the conveyer belt and whether beveled pinion 63 or beveled pinion 66 is fixed to the shaft 51. In the present description of the operation of the device, the upper idler roller I3 is rotated in a counter-clockwise direction and the idler roller I 4 is rotated in a clockwise direction by the conveyer belt Ii], looking at the right of Figure 1. The shafts E2 and 51 will be rotated in a clockwise direction by the clockwise rotation of the idler roller I i. The beveled pinion 63 being fixed to the shaft 57 will impart rotation to the shaft 66 in a clockwise direction, looking at Figure 2, and the beveled pinion 69 meshing with beveled pinion Iii will rotate shaft II in a clockwise direction, looking from the right end of Figure 2. The shaft 'II will rotate the disk 5| in a counter-clockwise direction through the meshing beveled pinions 14, I5. The friction wheel It will be rotated in a counterclockwise direction, looking at the right of Figure 2, and through the bell crank levers H3, H6 and II], lit, the gear I37 and elongated pinion I28, the shaft I32 will be rotated in a counterclockwise direction looking at the right of Figure 2, as indicated by the arrow in Figure 5. The beveled pinion I25 will be rotated in a counter-clockwise direction by the clockwise rotation of gear It? through the shaft II and the counter-clockwise rotation of the gear I58 meshing with gear IEi'I looking from the right of Figure 2. The cage will be rotated in counterclockwise direction by the counter-clockwise rotation of the shaft I32 through the sprocket wheels I34, I23 and sprocket chain I35 looking rom the right of Figure 2. The position of the scale beam 39 determines the position the friction wheel 36 will assume on the horizontal portion of the friction disk 5! by the connection of the friction wheel carrier I9 through the rod 89, 9G with the beam arm 43. As shown in Figure 2, the friction wheel has been caused to assume a position on the friction disk outwardly toward the periphery from a position radially inward toward the axis of the disk with the axis of rotation of the friction wheel extending in a plane to intersect the axis of the friction disk by an increase in the weight of the material on the conveyer belt i9 moving the short end of the scale beam 32 downwardly against the weight of the counter-weight 33 and actuating to the right, as viewed in Figure 2, the rod connecting the beam arm &3 to the friction Wheel carrier 59. This movement of the scale beam through its connection with the friction wheel carrier 19 actuated said carrier about its pivot support if} in the carriage 3 5 to change the angular position of the axis of rotation of the friction wheel relative to the friction disk 5| and causes the friction wheel to travel outwardly toward the periphery of the friction disk and the carriage 8 for said carrier to move in the same direction on the rail 28 until the friction wheel assumed a position with the axis of rotation thereof extending in a plane intersecting the axis of the friction wheel, as shown in Figure 2. The positioning of the friction wheel outwardly toward the'periphery of the friction disk increases the speed of rotation of the friction wheel and correspondingly increases the speed'of rotation of the differential cage IQEI which is transmitted to the beveled pinion I53 and shaft I49 of the diiferentia1 and from the latter through the gears I50, I5I to the register actuating shaft I52. The decrease in the weight on the conveyer belt will have an opposite effect on the scale beam 39 and cause the friction wheel to assume a position toward the center of the friction disk i and a proportional decrease in the speed of rotation of the friction wheel and a reduction in the actuation of the register.

The differential means 100, I03, I05, I48, may be protected from accumulation of dirt by providing a cover for the casing 13, as shown at I54 in Figures 1 and '7.

Having thus described the invention, it is claimed:

1. In integrating means, a friction disk rotated in correspondence with the value of one of the quantities to be integrated, a friction wheel, a carriage movable in a plane transversely of the friction disk, a carrier supporting the friction wheel to rotate about its axis pivotally mounted in the carriage to have adjustment with the friction Wheel about an axis perpendicular to the axi of rotation of the friction Wheel and position the friction Wheel to frictionally engage the disk with the axis of the friction wheel normally extending in a plane intersecting the axis of the friction disk, means to adjust said carrier with the friction wheel about its pivot support in the carriage and change the angular position of the axis of rotation of the friction wheel relative to the friction disk and cause said friction wheel to travel radially of and assume different positions on the disk in correspondence with fluctuations in the value of the other quantity to be integrated, and means to combine the rotations of said disk and said friction Wheel to give the integrated value, comprising differential gearing, an elongated pinion rotatable on an axis parallelly of the movement of the carriage, means to operatively connect and transmit the rotation of said pinion to an element of the differential gearing, a gear rotatably carried by and participating in the movement of the carriage meshing with said pinion, means to transmit the rotation of the friction wheel to said gear, and gearing operatively connecting another element of the differential gearing with and rotate the same at a speed proportional to the rotation of the disk.

2. In integrating means, a friction wheel rotated in correspondence with the value of one of the quantities to be integrated, a friction wheel, a carriage movable in a plane transversely of the friction disk, a carrier supporting the friction wheel to rotate about its axis pivotally mounted in the carriage to have adjustment with the friction wheel about an axis perpendicular to the axis of rotation of the friction wheel and position the friction wheel to frictionally engage the disk with the axis of the friction wheel normally extending in a plane intersecting the axis of the friction disk, means to adjust said carrier with the friction Wheel about its pivot support in the carriage and change the angular position of the axis of rotation of the wheel relative to the friction disk and cause said friction wheel to travel radially of and assume different positions on the disk in correspondence with fluctuations in the value of the other quantity to be integrated, and means to combine the rotations of said disk and said friction wheel to give the integrated value, comprising differential gearing, gearing operatively connecting and rotating an element of the differential gearing from the friction disk, an elongated pinion rotatable on an axis extending parallelly of the plane of movement of the carriage and operatively connected to and transmitting the rotation thereof to another element of the differential gearing, a gear carried by the carriage meshing with and movable longitudinally of the pinion by the movement of the carriage, and means to transmit the rotation of the friction wheel to said gear including a pair of bell crank levers, one arm of each of said levers being connected eccentrically to opposite sides of said gear and the other arm of each lever connected eccentrically to the friction Wheel.

KATHERINE S. MERRICK. Emecutria: of the Estate of Herbert L. Merrick,

Deceased. 

